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Grid for one circuit breaker panel and solar/battery hybrid for second panel?

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  • Grid for one circuit breaker panel and solar/battery hybrid for second panel?

    I live in MA. Is it possible to use the grid for one circuit breaker panel and Solar/battery hybrid for second panel? i.e. the two are separate circuits. Tesla told me that no solar installer would do it. Is this true? If so, why? If not, what are the pros/cons with this.

  • #2
    No reason why not I have done these before.
    NABCEP certified Technical Sales Professional

    [URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]

    [URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)

    [URL="http://www.gaisma.com"]www.gaisma.com[/URL]

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    • #3
      Originally posted by rlaferla View Post
      I live in MA. Is it possible to use the grid for one circuit breaker panel and Solar/battery hybrid for second panel? i.e. the two are separate circuits. Tesla told me that no solar installer would do it. Is this true? If so, why? If not, what are the pros/cons with this.
      I think the use of the word "hybrid" could be confusing for your design ...

      AC Panel #1 = is normal Grid Power only
      AC Panel #2 = is PV Array + Tesla Power Wall only = OFF-GRID

      Is 50% off-grid legal in you area?

      There is a lawsuit filed by a homeowner in Florida attempting to go 100% off-grid with PV + Power Wall 2,
      but an ordinance requires a grid connection.
      Last edited by NEOH; 11-09-2017, 10:32 AM.

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      • #4
        That's my question. Is it legal in MA? Why would it ever be illegal?

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        • #5
          Originally posted by rlaferla View Post
          That's my question. Is it legal in MA? Why would it ever be illegal?
          Some municipalities require a grid tie connection to a home if it is inside a certain district. They may also restrict the amount of off grid generation for that home.

          As NEOH mentioned a homeowner in Florida is being fined for having a home totally off grid within the city limits. He is breaking a local law which IMO defines being "illegal".

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          • #6
            Why would you do this. Get bimodal or hybrid.

            in this set up
            panel 1 is grid and solar back feed
            panel 2 is grid and solar with backup from battery.

            far more efficient than
            panel 1 grid only
            panel 2 solar off grid
            OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNH

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